Northeast Texas is a region in the northeast corner of the U.S. state of Texas. It is geographically centered on two metropolitan areas strung along Interstate 20: Tyler in the west and Longview/Marshall to the east. Clarksville, Mount Pleasant, Greenville, Paris and Texarkana in the north and the Nacogdoches/Lufkin area, Jacksonville and Palestine to the south are also major cities within the region. Most of Northeast Texas is included in the inter-state region of the Arklatex.